Arthur J. Gallagher & Co.
MX ˙ BMV ˙ US3635761097
SecurityMX:AJG / Arthur J. Gallagher & Co.
InstitutionTompkins Financial Corp
Latest Disclosed Ownership47,414 shares
Latest Disclosed Value $ 10,268,924
Tompkins Financial Corp reports 0.88% decrease in ownership of AJG / Arthur J. Gallagher & Co.

On April 9, 2026 - Tompkins Financial Corp filed a 13F-HR form disclosing ownership of 47,414 shares of Arthur J. Gallagher & Co. (MX:AJG) valued at $10,268,924 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 8, 2026 disclosing 47,835 shares of Arthur J. Gallagher & Co.. This represents a change in shares of -0.88% during the quarter.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-04-09 2026-03-31 13F GALLAGHER ARTHUR J COM 363576109 47,414 -421 -0.88 10,269 -17.05 0.7213
2026-01-08 2025-12-31 13F GALLAGHER ARTHUR J COM 363576109 47,835 -172 -0.36 12,379 -16.75 0.9626
2025-10-08 2025-09-30 13F GALLAGHER ARTHUR J COM 363576109 48,007 -694 -1.43 14,870 -4.62 1.2435
2025-07-10 2025-06-30 13F GALLAGHER ARTHUR J COM 363576109 48,701 -2,042 -4.02 15,590 -11.01 1.4331
2025-04-07 2025-03-31 13F GALLAGHER ARTHUR J COM 363576109 50,743 -366 -0.72 17,519 20.76 1.6763
2025-01-15 2024-12-31 13F Arthur J Gallagher COM 363576109 51,109 -135 -0.26 14,507 0.62 1.3492
2024-11-01 2024-09-30 13F Arthur J Gallagher COM 363576109 51,244 -215 -0.42 14,419 8.06 1.3820
2024-07-17 2024-06-30 13F Arthur J Gallagher COM 363576109 51,459 -219 -0.42 13,344 3.27 1.3974
2024-04-08 2024-03-31 13F Arthur J Gallagher COM 363576109 51,678 -26 -0.05 12,922 11.13 1.4613
2024-01-08 2023-12-31 13F Arthur J Gallagher COM 363576109 51,704 904 1.78 11,627 0.42 1.4084
2023-11-21 2023-09-30 13F Arthur J Gallagher COM 363576109 50,800 4,030 8.62 11,579 12.75 1.8230
2023-07-12 2023-06-30 13F Arthur J Gallagher COM 363576109 46,770 -3,126 -6.27 10,269 7.59 1.6081
2023-04-20 2023-03-31 13F Arthur J Gallagher COM 363576109 49,896 -810 -1.60 9,546 105,955.56 1.5536
2023-01-06 2022-12-31 13F Arthur J Gallagher COM 363576109 50,706 -2,011 -3.81 10 -99.90 1.5107
2022-10-13 2022-09-30 13F Arthur J Gallagher COM 363576109 52,717 -1,293 -2.39 9,026 2.50 1.5231
2022-07-14 2022-06-30 13F Arthur J Gallagher COM 363576109 54,010 195 0.36 8,806 -6.28 1.4153
2022-05-12 2022-03-31 13F Arthur J Gallagher COM 363576109 53,815 1,079 2.05 9,396 5.02 1.3246
2022-01-24 2021-12-31 13F GALLAGHER ARTHUR J & CO COM EQUITIES/EXCHANGE TRADED FUNDS 363576109 52,736 -932 -1.74 8,947 12.16 1.5874
2021-10-22 2021-09-30 13F GALLAGHER ARTHUR J EQUITIES/EXCHANGE TRADED FUNDS 363576109 53,668 -1,403 -2.55 7,977 16.10 1.4582
2021-06-09 2021-03-31 13F GALLAGHER ARTHUR J & CO COM EQUITIES/EXCHANGE TRADED FUNDS 363576109 55,071 667 1.23 6,871 2.10 1.1632
2021-02-12 2020-12-31 13F/A-1 GALLAGHER ARTHUR J & CO COM EQUITIES/EXCHANGE TRADED FUNDS 363576109 54,404 3,587 7.06 6,730 25.44 1.2105
2021-02-05 2020-12-31 13F GALLAGHER ARTHUR J & CO COM US MID-CAP EQUITIES 363576109 9,469 -41,348 772 32,496.8892
2020-10-23 2020-09-30 13F GALLAGHER ARTHUR J EQUITIES/EXCHANGE TRADED FUNDS 363576109 50,817 522 1.04 5,365 9.42 1.0317
2020-07-29 2020-06-30 13F GALLAGHER ARTHUR J & CO COM EQUITIES/EXCHANGE TRADED FUNDS 363576109 50,295 1,692 3.48 4,903 23.78 1.0300
2020-04-22 2020-03-31 13F GALLAGHER ARTHUR J & CO COM EQUITIES/EXCHANGE TRADED FUNDS 363576109 48,603 -679 -1.38 3,961 -15.60 0.9141
2020-01-22 2019-12-31 13F/A-1 GALLAGHER ARTHUR J & CO COM EQUITIES/EXCHANGE TRADED FUNDS 363576109 49,282 1,700 3.57 4,693 10.14 0.8599
2020-01-15 2019-12-31 13F GALLAGHER ARTHUR J & CO COM EQUITIES/EXCHANGE TRADED FUNDS 363576109 47,582 0 4,261 647,174.9696
2019-10-17 2019-09-30 13F GALLAGHER ARTHUR J & CO COM EQUITIES/EXCHANGE TRADED FUNDS 363576109 47,582 -220 -0.46 4,261 1.77 0.8658
2019-07-17 2019-06-30 13F GALLAGHER ARTHUR J & CO COM EQUITIES/EXCHANGE TRADED FUNDS 363576109 47,802 3,941 8.99 4,187 22.25 0.8419
2019-04-30 2019-03-31 13F/A-1 GALLAGHER ARTHUR J EQUITIES/EXCHANGE TRADED FUNDS 363576109 43,861 760 1.76 3,425 7.84 0.6506
2019-04-17 2019-03-31 13F GALLAGHER ARTHUR J & CO COM EQUITIES/EXCHANGE TRADED FUNDS 363576109 43,774 673 3,258
2019-01-22 2018-12-31 13F GALLAGHER ARTHUR J & CO COM EQUITIES/EXCHANGE TRADED FUNDS 363576109 43,101 -673 -1.54 3,176 -2.52 0.7013
2018-10-18 2018-09-30 13F GALLAGHER ARTHUR J & CO COM EQUITIES/EXCHANGE TRADED FUNDS 363576109 43,774 212 0.49 3,258 14.60 0.6682
2018-07-18 2018-06-30 13F GALLAGHER ARTHUR J & CO COM EQUITIES/EXCHANGE TRADED FUNDS 363576109 43,562 735 1.72 2,843 -3.40 0.6127
2018-04-26 2018-03-31 13F GALLAGHER ARTHUR J & CO COM EQUITIES/EXCHANGE TRADED FUNDS 363576109 42,827 190 0.45 2,943 9.12 0.6592
2018-01-24 2017-12-31 13F GALLAGHER ARTHUR J & CO COM EQUITIES/EXCHANGE TRADED FUNDS 363576109 42,637 335 0.79 2,697 3.61 0.6181
2017-10-17 2017-09-30 13F GALLAGHER ARTHUR J & CO COM EQUITIES/EXCHANGE TRADED FUNDS 363576109 42,302 488 1.17 2,603 8.73 0.6164
2017-07-11 2017-06-30 13F GALLAGHER ARTHUR J & CO COM EQUITIES/EXCHANGE TRADED FUNDS 363576109 41,814 -283 -0.67 2,394 0.59 0.6025
2017-04-17 2017-03-31 13F/A-1 GALLAGHER ARTHUR J & CO COM EQUITIES/EXCHANGE TRADED FUNDS 363576109 42,097 -47 -0.11 2,380 8.73 0.6037
2017-04-17 2017-03-31 13F GALLAGHER ARTHUR J & CO COM EQUITIES/EXCHANGE TRADED FUNDS 363576109 39,481 1,756
2017-01-10 2016-12-31 13F GALLAGHER ARTHUR J & CO COM EQUITIES/EXCHANGE TRADED FUNDS 363576109 42,144 1,826 4.53 2,189 6.78 0.5733
2016-10-13 2016-09-30 13F GALLAGHER ARTHUR J & CO COM EQUITIES/EXCHANGE TRADED FUNDS 363576109 40,318 419 1.05 2,050 7.95 0.5873
2016-07-13 2016-06-30 13F GALLAGHER ARTHUR J & CO COM EQUITIES/EXCHANGE TRADED FUNDS 363576109 39,899 418 1.06 1,899 8.14 0.5618
2016-04-20 2016-03-31 13F GALLAGHER ARTHUR J & CO COM EQUITIES/EXCHANGE TRADED FUNDS 363576109 39,481 3,335 9.23 1,756 18.73 0.5549
2016-01-19 2015-12-31 13F GALLAGHER ARTHUR J & CO COM EQUITIES/EXCHANGE TRADED FUNDS 363576109 36,146 2,016 5.91 1,479 5.04 0.4711
2015-10-16 2015-09-30 13F GALLAGHER ARTHUR J & CO COM EQUITIES/EXCHANGE TRADED FUNDS 363576109 34,130 2,296 7.21 1,408 -6.45 0.4551
2015-07-14 2015-06-30 13F GALLAGHER ARTHUR J & CO COM EQUITIES/EXCHANGE TRADED FUNDS 363576109 31,834 31,834 1,505 0.4090
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.